20450977038 has 40 divisors (see below), whose sum is σ = 46943043840. Its totient is φ = 6650722080.

The previous prime is 20450976989. The next prime is 20450977049. The reversal of 20450977038 is 83077905402.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20450976984 and 20450977002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1532878 + ... + 1546161.

It is an arithmetic number, because the mean of its divisors is an integer number (1173576096).

Almost surely, 2^20450977038 is an apocalyptic number.

20450977038 is an abundant number, since it is smaller than the sum of its proper divisors (26492066802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20450977038 is a wasteful number, since it uses less digits than its factorization.

20450977038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3079094 (or 3079085 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 20450977038 in words is "twenty billion, four hundred fifty million, nine hundred seventy-seven thousand, thirty-eight".